用gulp创建.js，.min.js和.js.map文件吗？

Question

我正在尝试使用gulp 3.9来缩小我的资源文件。

我在gulpfile中创建了两个不同的任务，看起来像这样

var gulp = require("gulp"),
concat = require("gulp-concat"),
cssmin = require("gulp-cssmin"),
filter = require('gulp-filter'),
sourcemaps = require('gulp-sourcemaps'),
rename = require('gulp-rename'),
uglify = require('gulp-uglify-es').default,
merge = require("merge-stream"),
del = require("del"),
bundleconfig = require("./bundleconfig.json");

gulp.task("min:js", function () {
    var tasks = getBundles(regex.js).map(function (bundle) {

        return gulp.src(bundle.inputFiles, { base: ".", sourcemaps: true })
            .pipe(filter('**/*.js'))
            .pipe(concat(bundle.outputFileName))
            .pipe(sourcemaps.write('../maps')) // shouldn't this create file.js.map file?
            .pipe(gulp.dest("."))
            .pipe(uglify())
            .pipe(rename({ suffix: '.min' }))
            .pipe(sourcemaps.write('../maps')) // shouldn't this create file.min.js.map file?
            .pipe(gulp.dest("."));
    });

    return merge(tasks);
});

gulp.task("min:css", function () {
    var tasks = getBundles(regex.css).map(function (bundle) {
        return gulp.src(bundle.inputFiles, { base: ".", sourcemaps: true })
            .pipe(filter('**/*.css'))
            .pipe(concat(bundle.outputFileName))
            .pipe(sourcemaps.write('../maps'))
            .pipe(gulp.dest("."))
            .pipe(cssmin())
            .pipe(rename({ suffix: '.min' }))
            .pipe(sourcemaps.write('../maps'))
            .pipe(gulp.dest("."));
    });
    return merge(tasks);
});

但是，以上代码似乎仅生成.min和常规文件（非最小化文件），而不生成源映射文件。

每次执行“ min：js”和“ min：css”任务时，如何使用Gulp生成3个js，css和sourcemap文件？

Answer 1

根据文档，您应该初始化源映射：

.pipe(sourcemaps.init())

代最小化的js案例：

gulp.src(bundle.inputFiles, { base: ".", sourcemaps: true })
            .pipe(filter('**/*.js'))
            .pipe(sourcemaps.init())
            .pipe(concat(bundle.outputFileName))
            .pipe(sourcemaps.write('../maps'))  
            .pipe(uglify())
            .pipe(rename({ suffix: '.min' }))
            .pipe(gulp.dest(".")) ;

然后相应地更改CSS缩小。 Click her for more info about sourcemap